Keyless lock.



l PATBNTE'D-'JULY131, 1906. G. W. STRONG. KBYLESS LOCK.

- APPLIcATIoN FILED 11.110.19.11904. mmwm DB0. 29, 1905.

for;

WWA

1HE NoRRls PETERS cu., wAsHmcraN, n. c.

- citizen ,of `the United J.GEOEeEw. srEONo, OE OHIOAGO, iLL1NOis', Ass1oNOR 'ro-THOMAS B.

Y DATES,

OFy CHICAGO, ILLINOIS.

vKEYLESS LOOK.

Specification ofkLetters Patent.

v Patented Juiy v31, 1906.

. Application iiled December 19,1904. Renewed DecemberZQ, 195. SerialNo. 293,821.

.To all whom it may concern,.- i,

f Beit known that I, GEORGE W. STRONG, a

States, residing at` Chicago, county of Cook,-State of Illinois, have invented acertain new and useful Improvementin-Keyless Locks; and I Ideclare` the following to be a full, clear, and exact -description of the inven-tion, such aswill enable others skilled in the art tol which it pertains to ,make and usethe same, reference being had to` theaccompanying drawings, which form apart of this specification.

My invention relates in general` tolocks, and more particularly to keyless locks. Iny the kuse of keylesslocks for post-oiiice letter-boxes and for similar purposes it is desirable' thatthe tumblers may be readily set from the outside of the box to permit the bolt to be withdrawn from itskeeper and thatthe mereclosing of the door will disconcertthe tumblers.v It is also desirable that the `bolt should `be capable of-being withdrawnfrom f the insideof the'door without iirst setting the tumblers.

- The primary object of invention is to i provide a keyless lockof the type referred to which will be simple in construction, inexpensiveinmanufacture, and eiiicient in use.

The embodimentof my invention herein disclosed maybe generally' describedas cons istingin a spindle, tumblers surrounding the spindle yto berotated thereby, an oscillatory 1 fence-section, a knob for oscillating the fencesection when the tumblers have been set, a swinging link carried by the fence-section-,\a reciprocating. bolt pivotally vconnected to said link, a nger projecting from the link adapted to engage a pin lon one of the tumblers to disconcert the lock when the link is swung.l relativelyy to the fence-section, av de- 4tent.'` carried by` the fence-sectionv engaging notches in theperiphery .of a tumbler fixed on the spindle, and a spring the. tension of whichnormally retains the fence-section. and link .thereon inposition to project the bolt and also retains thedetent againstthe pe# ripheryfof :the cooperating tumbler. v

invention will be .more fully described hereinafter with reference to the accompanyingdrawings, yin which the same is illustrated in aiconvenient andpractical form, andin which-'- ii Figure 1. is. anelevational view; Fig.` 2,-.a

sectional view online2 2, Fig. 1 Fig. 3, a sec` tional viewonfline 3. 3, Fig.` l; and Fig. 4an elevational view with partsremoved.

The same referencevcharacters are used to designate vthe same. ures of. the.y drawings.

any construction, upon which my improved `keyless lock is mounted.

B indicates a spindle extending. through and j ournaled in thedoor and having. a knob b for rotating the same located on the outside of thedoor.

C designates a tumbler fixed to rotatewith the spindle in any suitable mannerfsuch, for instance, as by providing anoctagonalshaped hole therethrough, which. surrounds an octagonalportionof .the spindle.

D. indicates a. second tumbler, which is loosely mounted upon the spindle by meansof a circularl portion Jofjthe spindle extending through a circular hole in the'tumbler.

The innerl facesof the vturnblers ,are provided with pins c2. d2, located the same distance from the-centers of the tumblers, so that the loose tumbler D will vbe-rotatedv with the spindle when Ithe pin c2 on the tumbler C engages the pin dzon the tumbler D.

ReferencecharacterA designates a;door ofv parts in the several iigy' In order that the tumbler D may beheld i from rotation with the spindle except when the .pins on the tumblers are in. engagement, frictional retaining means are provided lconsisting in a vcircular' vplate E, secured tov a semicircular raised .portion a, formed von the inner surface .ofthedoor7 which extends between the tumblers, andawasher F, which surroundsthe spindle and is providedwith resilient tongues ff, bearing against the vface of the tumbler D. In order that the tumbler Dv may be .held ywith the l,desired lpressure between the plate .E and washer F, screws ff pass through the ends ofthe resilient tongues yf and also through holes in theplate E and 1n` the. screw-threaded: holesy` formed in= the raised portiona on the-door. 'j By adjusting the screws f fthe pressurevwith which the tumbler D is forced against theplate Eby means ofthe washerF may-.be varied atl will.

G designates a fence section of substantiallyk heshapeshown in Figs.- l and 4 land which is provided wi-tha squared opening g', through which extendsthe squarepportion pf. a yspindle..II,-ftheI latterv extending turns, which surround a pin m, projecting through and being j ournaled in the door and provided with a knob h on the outside of the door. Formed integrally with the fence-section G is a detent g, which engages notches c in the periphery of the tumbler C. The fence G is carried by the fence-section, which when the tumblers are set and the fence-section oscillated is received within registeringnotches c and d in the tumblers. Pivoted upon a lug G2, formed integrally with the fence-section, is a link K, to which is pivoted the bolt L, the latter being located within a guide a, carried by the door. Z designates the pivot-pin, which unites the inner end of the bolt to the link K. A finger k, preferably formed integrally with the link K, eX- tends over the adjacent edge of the tumbler D and is adapted to engage a pin d thereon to disconcert the tumblers.

A spring M is provided with one or more from the door, and extends at one end above and bears against the guide a of the bolt. yThe opposite end of the spring is offset at m2 and bears against the link K adjacent its fulcrum-pin lc. The tension of the spring M forces the link K against a stop g2, carried by `the fence-section.

The inner endl of the spindle B is provided with a screw b, the head of which overlies the washer F, and thereby revents the spindle from being disengaged om the door. A similar screw h engages the inner end of the spindle H to prevent the latter from being disengaged from the door and also to retain thereon the portion of the fence-section in which the square opening g is provided.

A indicates a projection on the door, into alinement with which a projection B, carried by the spindle, is adapted to be brought preparatory to` setting the tumblers.

The operation of my invention is as follows: In order to set the tumblers, the spindle B is rotated a predetermined distance in one direction, thereby through the engagement of the pins c2 d2 rotating the tumbler D to such a position that the notch d therein is brought into alinement with the fence G. The spindle is then rotated in an opposite direction a predetermined distance, thereby bringing the notch c in the tumbler C into register with the notch d', and consequently into alinement with the fence G8. The detent g is forced into contact with the periphery of the tumbler C by means of the tension of the spring M, thereby causing a clicking sound to be produced as the spindle is rotated and rendering it possible to readily rotate the spindle in each direction the necessary distance to bring the notches therein into register and into alinement with the fence.

When the tumblers have been set, the knob h on the spindle II is rocked, thereby oscillating the fence-section G, and with it from lits keeper. The oscillation of the fence-section is permitted by the fence passing into the registered notches in the tumblers. The tension of the spring M at once swings the fence to its normal position immediately upon the pressure upon the knob 7L being discontinued. When the door is clpsed, the movement of the bolt due to its engagement with its keeper forces the nger k against the pin d, thereby partially rotating the tumbler D, so that the notch d therein is moved out of alinement with the fence G.

The pivot-pin Z', which unites the bolt to the link K, projects a sufficient distance to enable the bolt to be withdrawn from its keeper from the inside of the door when it is desired to open the door without first setting the tumblers.

It will be observed that the spring M performs four separate functions: first, that of oscillating the fence-section to withdraw the fence from engagement with the notches in the tumblers, second, it forces the detent g into contact with the notches in the periphery of the tumbler C; third, it projects the bolt relatively to 'the fence-section, and, fourth, it withdraws the finger k from the path of the pin d after the tumblers have been disconcerted.

From the foregoing description it will be observed that I have invented an improved keyless lock the tumblers of which may be readily set owing to the clicks produced as the spindle is rotated in each direction, the bolt of which mayl be withdrawn from one side of the door, and in which the tumblers are automatically disconcerted by the closing of the door upon which the lock is mounted.

While I have described more or less precisely the details of construction, I do not wish to be understood as limiting myself thereto, as I contemplate changes in form, the proportion of parts, and the substitution of equivalents as circumstances may suggest or render expedient without departing from the spirit of my invention.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a keyless lock, the combination with a spindle, of tumblers rotated by the spindle, an oscillatory fence-section, a reciprocating bolt, a link interposed between the bolt and fence-sectionfor permitting the bolt to be reciprocated relatively to the fence-section, and a spring for oscillating the fence-section and thereby projecting the bolt.

2. In a keyless lock, the combination with a spindle, of tumblers rotated by the spindle, an oscillatory fence-section, a reciprocating bolt pivotally mounted upon and carried by the fencesection, a nger connected to the bolt for disconcerting the tumblers, and a the bolt L, so that the latter is disengaged spring the tension of which oscillates the fence- IOO IIO

section relatively tothe tumblers and reciprocates the bolt relatively to the fence-sectionv 3. In a keyless lock, thecombination with a`spindle, Of tumblers rotated by the spindle, an oscillatory fence-section, a reciprocating bolt, a link interposed between the bolt and fence-section for permitting the bolt. to reciprocate relatively to the fence-section, a finger carried by said link, a pin projecting from one of said tumblers into the path of movement Of said finger, and a spring engagingsaid link for projecting thebolt and removing said finger from the path Vof said pin.

4. In a keyless lock, the combination with a spindle, of tumblersrotated by the spindle, onel of said tumblers provided with notches inits periphery, a fence-section, ,a reciprocating bolt operatively connected to the fencesection, a fence on said section, a detent carried by the fence-section andengaging said notches, and a spring the tension of which 'moves said fence-section relatively f to the tumblers and retains said detent against the periphery of the cop erating tumbler.

' 5. In a keyless lock, the combination with a spindle, of tumblers rotated bythe spindle,

. an oscillatory fence-section, a reciprocating bolt operatively connectedto the fence-section, a detent rigidly secured to the fencesection and engaging notches inthe periphery of one of the tumblers, and a spring for retaining the fence-section normally in position to disengage the fence from the tumblers and forceA said detent against the periphery of the coperating tumbler.

6. In a keylesslo'ck, the combination with a spindle, Of tumblers rotated by said spindle,

an oscillatory fence-section, a reciprocating bolt, a link pivoted at its lower end to said fence-section and at its upper end to said bolt, a spring bearing against said link the tension of which reciprocates the bolt relatively to the fence-section and oscillates the fence-section so as to withdraw the fence from engagement with thetumblers.

7. In a keyless lock, the combination with a spindle, Of tumblers rotated by the spindle, an oscillatory fence-section, a reciprocating bolt, a link pivoted at its lower end to said fence-section and at its upper end to said bolt, a spindle u On which the fenceesection is fixed, means4 or rocking said spindle and thereby withdrawing the bolt from its keeper, and a spring bearing against said link against the tension Of which said fence-section is Os- `second from the first,

bolt, a guide in which the bolt reciprooates,

a link pivoted at its lower end to said fencesection and at its upperend to said bolt, a spring supported upon a pin and bearingat one end upon the guide for the bolt and at its lowerend -engaging said link.

9. In a keyless lock, the combination withv a support, Of a spindle extending through said support, a' tumbler fixed On said spindle, a

second tumbler loosely surrounding said spindle, means interposed between said tumblers for imparting rotary motion to the second from the first, a platey fixed to said support and extendingbetween said tumblers,`

and adjustable means for-forcing the second tumbler into frictional engagement with said plate.

l0. In a keyless lock, the combination with a support, ofa spindle extending through said support, a tumbler fixed On said spindle, a second tumbler loosely surrounding said spindle, means interposed between said tumblers for imparting rotary motion to the second from the first, a plate fixed to said support and extending `between said tumblers, a washer surrounding said spindle and bearing against the outer surface of the second tumbler, and means for varying the pressure with which said washer engages said tumbler.

l 1. In a'keyless lock, the combination with a support, of a spindl said support, a tumbler fixed on said spindle, a second' tumbler loosely surrounding said spindle, means interposed between said tumblers for imparting rotary motion to the a plate ixed to said support and extending between said tumblers, a Washer surrounding said spindle and bearing against the outer bler, radial resilient fingers carried by said washer, and screws extending through the ends of said fingers into engagement with said su port.

e 'extending through surface of the second tumf tion in the presence of two witnesses.

' GEORGE w. STRONG.

Witnesses:

GEO. L. WILKINSON.l j s C. A: MULLEN. 

